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Recognition of Car License Plate Using Geometric Information from Portable Device Image

휴대단말기 영상에서의 기하학적 정보를 이용한 차량 번호판 인식

  • 염희정 (경원대학교 일반대학원 전자계산학과) ;
  • 은성종 (경원대학교 일반대학원 전자계산학과) ;
  • 황보택근 (경원대학교 일반대학원 전자계산학과)
  • Received : 2010.06.07
  • Accepted : 2010.10.25
  • Published : 2010.10.28

Abstract

Recently, the character image processing technology using portable device camera image at home and abroad are actively conducted, but Practical use are lower rate because of accuracy and time-consuming process problems. In this paper, we propose the license plate recognition method based on geometric information from portable device camera image. In the extracted license plate region we recognize characters using the chain code and the Thickness information through the cumulative projected edge after performing the pre-processing work considering the angle difference, the contrast enhancement and the low resolution from portable device camera image. The proposed algorithm is effective and accurate recognition by light and reducing the processing time. And, the results from the character recognition success rate was 95%. In the future, we will research about license plate recognition algorithm using long distance image or added motion blur image.

Keywords

License Plate Recognition;Geometric Information;Portable Device Image

Acknowledgement

Supported by : 경원대학교

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